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Patent Searching and Data


Title:
ELECTRICALLY-DRIVEN SWITCHGEAR
Document Type and Number:
Japanese Patent JP2021023540
Kind Code:
A
Abstract:
To make a touch motion function be exerted normally to reduce power consumption of an encoder.SOLUTION: An encoder 13 for detecting rotation of a drive shaft 12a of an electrically-driven motor 12 includes two or more detection conversion elements that optically or magnetically detect a rotation angle and rotation direction of the drive shaft as pulse signals having two or more phases differing from each other and perform conversion to electric signals. A controller 14 stores a signal waveform pattern at a stop position of the encoder in a memory 14 and keeps power supply to one detection conversion element of the two or more detection conversion elements and stops power supply to the other detection conversion element when the two or more detection conversion elements detect an operation stop signal of the electrically-driven motor; starts power supply to the other detection conversion element when the one detection conversion element detects manual movement of an opening/closing body; and, when the two or more detection conversion elements detect a trigger signal, determines a rotation direction of the electrically-driven motor on the basis of detection outputs and signal waveform patterns of the two or more detection conversion elements.SELECTED DRAWING: Figure 6

Inventors:
TAKAHASHI MASASHIGE
HAMANO NAOYOSHI
Application Number:
JP2019143842A
Publication Date:
February 22, 2021
Filing Date:
August 05, 2019
Export Citation:
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Assignee:
TOSO KK
International Classes:
A47H5/02
Attorney, Agent or Firm:
Masayoshi Suda
Akira Murasawa